【摘要】 对寨子河沥青混凝土心墙堆石坝进行施工及运行期的渗流和坝体应力应变三维非线性有限元数值计算,结果表明:各工况的渗流规律基本相同,且沥青混凝土心墙和帷幕防渗效果良好;各工况的最大沉降均出现在坝体中部高程,最大沉降出现在竣工期,沉降量约-28.877cm(占坝高93m的0.31%);坝体正常运行时应力水平处于正常范围;沥青混凝土的配合比对坝体应力影响较小,3号和9号配合比均可作为施工配合比。更多还原

【Abstract】 The dam type of Zhaizi Reservoir is chosen as rock-fill dam with rolled asphalt concrete core. The three-dimensional non-linear finite element method is used to calculate the seepage and stress-strain fields of dam during construction and operation periods respectively. The results show that,(a) the seepage law in each condition is basically the same and the core wall and curtain has a good effect on seepage control;(b) the largest dam settlements under all conditions are located in the middle of dam elevation, which occurs in completion date and is about-28.877 cm(0.31% to dam height);(c) the stress level of dam is in the normal range during normal operation; and(d) the asphalt concrete mixing ratio has only slight effect on the stress-strain of dam, and No. 3 and 9 mixing ratio can be selected for actual dam construction.更多还原